According to the main sequence turn-off points of the oldest globular clusters, they are about:
A) 4.5 billion years old.
B) 6.8 billion years old.
C) 10 billion years old.
D) 12 billion years old.
E) 16 billion years old.
D
Physics & Space Science
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A simple beam (L 5 9 m) with attached bracket BDE has force P 5 5 kN applied downward at E. The bending moment just right of B is approximately:
(A) 6 N?m
(B) 10 N?m
(C) 19 N?m
(D) 22 N?m
Physics & Space Science
What are the benefits of living near a volcano?
What will be an ideal response?
Physics & Space Science
Electric and magnetic fields combine to produce
A) sound. B) light. C) both of these D) none of the above
Physics & Space Science
Calculate
(a) Calculate the shortest wavelength EMR that has high tansmission through CdS. The energy gap in CdS is 2.25 eV. (b) Is a photon with energy 2.26 eV transmitted or absorbed? (c) Is a photon of energy 2.24 eV transmitted or absorbed?
Physics & Space Science